Glacier National Park in september: average Weather, Temperature and Climate
Weather in Glacier National Park in september 2025
The weather in Glacier National Park in the month of september comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather 3.9cm
Weather at 6am
43°F
Clear/Sunny
39% of time
28%
16%
9%
Weather at 12pm
56°F
Clear/Sunny
40% of time
26%
19%
11%
Weather at 6pm
45°F
Clear/Sunny
43% of time
22%
20%
7%
Weather at 3am
40°F
38%
22%
18%
15%
Evolution of daily average temperature and precipitation in Glacier National Park in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Glacier National Park in september.
The climate of Glacier National Park in september is tolerable
In september in Glacier National Park, the climate is wet (with 3.5in of rainfall over 6 days). The weather is worst than the previous month since in august there is an average of 2.9in of rainfall over 5 days.
The climate is rather cold there september, but it is tolerable when dressing warm. The high seasonal norm is 58°F. In the morning the temperature drops to 43°F. Thus, the mean temperature average on this month of september in Glacier National Park is 50°F. Note that these seasonal averages are in contrast with those observed in Glacier National Park in september with a maximum record of 85°F in 2017 and a minimum record of 23°F in 2019. You can hope to have about 7 days with temperatures over 65°F, or 23% of time.
On this month of september, day length in Glacier National Park is generally 12:37. The sun rises at 05:26 and sunset is at 18:03.
With proper weather, september is okay (but not good) to go in that area.
Glacier National Park: another month?
If you can push the dates of your trip to Glacier National Park forward, the month of october has a better weather forecast than september. more information
September: another location in Canada?
If you want to go to Canada in september, there are destinations with better weather than Glacier National Park:
In september, Ottawa, Halifax, Quebec City, Thunder Bay, Toronto and Vancouver have good weather.
Seasonal average climate and temperature of Glacier National Park in september
Check below seasonal norms These datas are compiled from the weather statements of the past years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 50°F | ||||
| Highest temperature | 58°F | ||||
| Lowest temperature | 43°F | ||||
| Highest record temperature | 85°F (2017) | ||||
| Lowest record temperature | 23°F (2019) | ||||
| Number of days at +65°F | 7 day(s) (23%) | ||||
| Number of days at -32°F | 2 day(s) (7%) | ||||
| Wind | |||||
| Wind speed | 9km/h | ||||
| Wind temperature | 41°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.5in | ||||
| Number of days with rainfall | 6 day(s) (19%) | ||||
| Record daily rainfall | 1.2in (2018) | ||||
| Snowfall | 3.9cm | ||||
| Other climate data | |||||
| Humidity | 79% | ||||
| Visibility | 8.95km | ||||
| Cloud cover | 32% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:26 | ||||
| Time of sunset | 18:03 | ||||
| Length of day | 12:37 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Glacier National Park in september 2024:
52°F to 77°F
52°F to 77°F
47°F to 68°F
49°F to 70°F
50°F to 76°F
52°F to 77°F
52°F to 79°F
52°F to 77°F
50°F to 70°F
43°F to 59°F
47°F to 59°F
47°F to 58°F
43°F to 58°F
43°F to 49°F
38°F to 58°F
38°F to 61°F
41°F to 61°F
45°F to 59°F
47°F to 54°F
38°F to 45°F
36°F to 45°F
43°F to 50°F
43°F to 50°F
47°F to 61°F
49°F to 65°F
38°F to 45°F
38°F to 49°F
34°F to 50°F
36°F to 45°F
32°F to 40°F
Map: other cities in Canada in september
Cities near Glacier National Park:
| Moraine Lake in september | very bad weather |
| Lake Louise in september | very bad weather |
| Banff National Park in september | very bad weather |
| Salmon Arm in september | good weather |
| Canmore in september | very bad weather |
| Jasper National Park in september | very bad weather |
| Kamloops in september | tolerable weather |
| Kelowna in september | good weather |
| Cranbrook in september | good weather |
| Calgary in september | tolerable weather |
| Penticton in september | tolerable weather |
| Red Deer in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Glacier National Park
perfect weather
good
tolerable
bad
very bad
Weather data for Glacier National Park in september:
Weather data for Glacier National Park for september are derived from an average of the weather forecast since 2009 in Glacier National Park. There is a margin of error and these forecasts are to be considered as general information only. The weather in Glacier National Park can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Glacier National Park.